Warp stop mechanism.



J. K. LANNING.

WARP STOP MEGHANISM.

APPLICATION FILED MAR.19, 1909.

976,379 Patented Nov. 22, 1910.

/f WMesses: Inventor.

%W 96 iw James awning.

UNITE gTATFE PATENT @FFIQE.

JAEIES K. LANNING, OF DORCHES'IER, MASSACHUSETTS.

TARP STOP MECHANISM.

To all whom "it may concern:

Be it known that I, JAMES K. LANNING, a citizen of the United States,residing at Dorchester, in the county of Suffolk and State ofMassachusetts, have invented an Improvement in Warp Stop Mechanism, ofwhich the following description, in connection with the accompanyingdrawings, is a specification, like letters on the drawings representinglike parts.

This invention relates to loom stopping mechanism and as herein shown ismore par ticularly intended for stopping the loom upon the occurrence ofwarp fault, although it may be utilized to stop the loom upon theoccurrence of any thread fault.

In order that the principles of the invention may be readily understood,I have dis closed an embodiment thereof in the accompanying drawing,wherein- Figure 1 is a side elevation of a loom embodying my invention;Fig. 2 is a detail showing one manner of supporting the shipper; Fig. 3is a detail representing modified means for operating the shipper; Fig.i is a detail in plan representing the manner of operating the shippershown in Fig. 8; and

.Fig. 5 is a similar detail representing the manner of operating theshipper shown in Fig. 1.

An object of my invention is to provide simple but effective means,preferably electrically operated, for stopping the loom and preferablyupon the backward beat. As herein represented, the loom is stopped inthe event of warp failure, but it may be employed in use in the event ofweft failure by suitably connecting the hunter operating means withmeans actuated upon weft fault. It is highly desirable that in the eventof threadfault the loom be stopped upon the backward beat of the lay;that is, before the beat-up, thus preventing as far as possible theincorporation of a broken thread into the clot-h.

In Fig. 1, I have represented a loom which may be and preferably is ofthe general construction illustrated in the patent to Coldwell andGildard, No. 658,237, September 18, 1900, though it will be understoodthat my invention may be employed in any desired type of loom.

In the drawings, the frame of the loom is represented at 1, the lay at2, the lease rods at 8, the warp drops or detectors at 1, and thecontact bar at 5, the said parts being Specification of Letters Patent.

Application filed. March 19, 1909.

Patented Nov. 22, 1910.

Serial No. 484,463.

preferably of the usual construction, such, for example, as shown in myPatent No. 861,217, July 13, 1907. IVhile an electrical stop motion ishere shown, it is to be understood that I am not limited thereto.

I suitably mount a hunter or knock-off finger normally held stationaryand out of the path of movement of the lay and move it into the path ofthe lay, at such time and in such manner that it is struck by the layupon the backward beat of the latter, connections being provided betweenthe hunter and the shipper immediately to stop the loom. The said bunteror knock-off finger is represented in Fig. 1 at 6 and is there shown aspivoted upon the knock-off lever 7 mounted upon the frame of the loom.Inasmuch as the hunter is normally stationary and is moved intooperating position only in the event of thread failure, a simpleconstruction of parts may be utilized. .Vhile the hunter may be movedinto operative position in any suitable manner, in the event stated, Ihave represented the same as operated by a magnet 8 mounted upon theloom frame and in circuit as shown with the contact bar 5 in such manneras to actuate the armature 9, thereby elevating the lift wire 10 andlifting the hunter 6 into the path of the lay when upon its backwardbeat.

The shipper lever, which may be any suitable loom stopping member, isrepresented at 11, it being herein shown as pivoted at 12 upon the loomframe and connected by a link 13 with the lever 7. The said shipperlever is preferably positioned in a shouldered slot 15 in the loomframe, and when released from the shoulder it is drawn by the coiledspring 16 toward the opposite end of the slot, thereby to shift the beltto stop the loom. In the construction shown in Figs. 1 and 5, theshoulder of the slot is so positioned that when the finger or hunter 6is impinged upon the shipper is pulled through the connecting rod 13from behind the shoulder in the direction of the arrow in Fig. 5.

In certain construction of looms, the shoulder of the slot 15 instead ofbeing placed as represented in Fig. 5 is positioned as represented inFig. 4:. In such constructions it is preferable to push the shipper intothe slot 15 past the shoulder. To do this I may mount the finger orhunter 6 upon a lever 16 having its fulcrum intermediate its ends andconnected to a rod 17 in such manner as to move the latter in thedirection of the arrow shown in Figs. 8 and 41, so as to push theshipper 11 past the shoulder and into the main portion of the slot 15.

A loom stop mechanism constructed in accordance with my invention is ofexceedingly simple construction and of comparatively few parts, andwhich may be held stationary when the loom is running under normalconditions. It is therefore distin guished from looms having a feeleracting to impart constant movement to a bunter or the like to move itout of the path of the lay, but permitting it to remain in such path inthe event of warp failure. Such constructions require a multiplicity ofcon stantly moving parts. The mechanism herein disclosed acts to stopthe loom upon the backward beat of the lay and immediately upon theoccurrence of thread failure.

Having thus described one illustrative embodiment of my invention, Idesire it to be understood that although specific terms are employed,they are used in a generic and descriptive sense and not for purposes oflimitation, the scope of the invention being set forth in the followingclaims.

Claims.

1. Warp stop mechanism for looms com prising in combination detectorsadapted to be displaced. upon warp fault, a knock-off lever mounted uponthe loom frame in the rear of the lay, a hunter mounted upon saidknock-off lever, electrical connections from said detectors forpositioning the hunter for loom stopping actuation upon a backward beatof the lay, a shipper lever mounted in front of the lay, and a linkconnecting said knock-off lever and said shipper lever to actuate thelatter.

2. Stopping mechanism for looms comprising in combination a knock-offlever mounted upon the loom frame in the rear of the lay, a huntermounted upon said knock-off lever, connections to said bunter forpositioning the latter for loom stopping actuation upon a backward beatof the lay in the event of thread fault, a shipper lever weave and adirect connection from said knock-off lever to said shipper lever toactuate the latter in the event of thread fault.

3. Stopping mechanism for looms comprising in combination a knock-0Elever mounted upon the loom frame in the rear of the lay, a huntermounted upon said knockoff lever, connections to said hunter forpositioning the latter for loom stopping actuation upon a backward beatof the lay, in the eventof thread fault, a shipper lever in front of thelay, and a link directly connecting said knock-off lever and shipperlever, said link being connected to said levers below the level of thelay.

l. Stopping mechanism for looms comprising in combination a verticalknock-oft lever mounted upon the loom frame in the rear of the lay, ahunter upon said knock-off lever, connections for positioning saidbunter for loom stopping actuation, upon a rearard beat of the lay inthe event of thread fault, a shipper lever in front of the lay, and alink connected to said ki'iock-ofl' lever below the hunter and below thelevel of the lay and directly connected to the shipper lever below thelevel of the lay.

5. Stopping mechanism for looms com prising in combination a knock-offlever mounted upon the loom frame in the rear of the lay, a huntermounted upon said knockoff lever, connections for positioning saidbunter for loom stopping actuation, upon a backward beat of the lay, inthe event of thread fault, a shipper lever in front of the lay, andmeans arranged below the level of the lay for connecting the knock-offlever and the shipper lever, whereby the loom is stopped upon thebackward beat of the lay in the event of thread fault.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

JAMES K. LANNING.

Witnesses EVERETT S. EMERY, THOMAS B. Boo'rrr.

